Club
Certificate
2024

Boat

DAZZLE

USA 69

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Rated boat velocities in knots
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat Angles43.2°41.0°38.8°37.4°36.8°36.7°36.9°37.8°
Beat VMG3.524.294.845.145.265.335.385.32
52°5.366.316.857.127.277.357.437.44
60°5.646.537.007.287.467.567.677.71
75°5.816.677.127.437.697.888.108.22
90°5.896.867.287.497.758.038.508.83
110°6.017.017.537.948.258.519.059.62
120°5.886.937.497.988.468.949.8310.96
135°5.256.487.217.738.248.8110.8313.56
150°4.455.606.547.157.517.879.0612.46
Run VMG3.854.855.676.196.516.997.8510.79
Gybe Angles143.7°147.8°148.9°150.4°149.3°174.6°139.4°142.2°
APH ToD:545.9CDL: 9.054APH ToT: 1.0991CertNo:USA69
BOAT
ClassJ 99DesignerJ BoatsBuilderJ CompositesAge date01/2020Series date01/2019Offset filej99-LK.offData fileUS69-99
HULL
Length Overall9.950 mMaximum Beam3.410 mDraft1.983 mDisplacement3,748 kgDLR5.9613IMS DivisionCruiser/RacerDynamic Allowance0.110%Age Allowance0.163%
PROPELLER
InstallationStrutTypeFolding 2 bladesDiameter0.371m
CREW
Maximum weight552 kg(default)Minimum weight422 kg * when appliedNon Manual PowerNoCrew Arm Extension
SAIL AREAS (m²)
MeasuredRatedMainsail33.9634.74Headsail Luffed27.0127.01Headsail FlyingSymmetricAsymmetric110.87110.87 (All asymmetric spinnakers with SHW/SFL > 85%)
STORM SAIL AREAS (m²)
Trysail9.75Storm Jib8.75Heavy Weather Jib23.62
SAIL LIMITS
Headsails5  Spinnakers4
STABILITY
Righting MomentN/AStability IndexN/A
The owner and any other person in charge is responsible that boat is complying with her certificate in accordance with RRS 78.1 and ORC Rule 304.

Club
Certificate
2024

Boat

DAZZLE

USA 69

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Time Allowances in secs/NM
Wind Velocity6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Beat VMG1022.0838.7744.1700.7683.8674.8669.3676.4
52°671.5570.2525.9505.4495.4490.1484.5483.9
60°638.7551.4514.3494.5482.7476.4469.1467.0
75°619.6540.1505.6484.4468.4456.9444.7437.9
90°611.3525.0494.7480.6464.5448.1423.3407.7
110°598.8513.8478.1453.6436.5423.0398.0374.3
120°612.6519.9480.4451.1425.7402.6366.3328.6
135°685.7555.2499.2465.9436.9408.4332.3265.4
150°809.2642.6550.2503.5479.1457.7397.3288.9
Run VMG934.3742.0635.4581.1553.2515.3458.8333.6
Selected Courses
Windward / Leeward978.2790.4689.7640.9618.5595.1564.0505.0
All purpose754.7624.7561.6529.1510.0493.5465.5429.3
Single Number Scoring Options
CourseTime On
Distance
Time On
Time
Windward / Leeward669.60.8961
All purpose545.91.0991
 
Custom scoring options for Australia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Custom scoring options for Austria
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Brazil
Scoring OptionTime On
Time
Upwind "bolina"0.7875
Downwind "popa"0.9502
70% up, 30% down "Ilhabela"0.8301
30% up, 70% down "Ilhabela-inverso"0.8947
Custom scoring options for Bulgaria
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Predominantly Upwind590.81.0155
Predominantly Downwind550.81.0894
Custom scoring options for Canada
Scoring OptionTODTOT
Triple Number AP Low689.70.8699
Triple Number AP Medium543.21.1046
Triple Number AP High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Single Number Predominant Upwind589.91.0172
Single Number Predominant Reaching522.91.1474
Single Number Predominant Downwind551.41.0881
Predominant Upwind - Low766.40.7829
Predominant Upwind - Low/Med644.60.9309
Predominant Upwind - Medium573.71.0459
Predominant Upwind - Med/High537.31.1167
Predominant Upwind - High516.11.1625
Predominant Downwind Low746.60.8036
Predominant Downwind Low/Med615.60.9747
Predominant Downwind Medium535.01.1215
Predominant Downwind Med/High479.21.2522
Predominant Downwind High427.41.4039
Predominant Reaching Low675.00.8889
Predominant Reaching Low/Med571.91.0492
Predominant Reaching Medium510.91.1745
Predominant Reaching Med/High468.31.2812
Predominant Reaching High431.81.3896
SA/DSPL Upwind25.16SA/DSPL Downwind59.76
Scoring OptionTODTOT
5-Band Windward/Leeward Low935.60.6413
5-Band Windward/Leeward Low/Med760.50.7890
5-Band Windward/Leeward Medium654.00.9175
5-Band Windward/Leeward Med/High597.71.0038
5-Band Windward/Leeward High559.21.0730
Windward/Leeward 60-40 Low944.50.6352
Windward/Leeward 60-40 Low/Med770.80.7784
Windward/Leeward 60-40 Medium666.00.9008
Windward/Leeward 60-40 Med/High613.70.9777
Windward/Leeward 60-40 High581.61.0316
5-Band AP Low725.20.8274
5-Band AP Low/Med607.50.9877
5-Band AP Medium536.31.1188
5-Band AP Med/High494.61.2132
5-Band AP High464.11.2929
5-Band SF Bay Tour - Low890.30.6740
5-Band SF Bay Tour - Low/Med728.00.8242
5-Band SF Bay Tour - Medium629.70.9528
5-Band SF Bay Tour - Med/High577.61.0387
5-Band SF Bay Tour - High541.51.1079
Chicago-Mac Upwind0.9983
Chicago-Mac All Purpose1.0317
Chicago-Mac Downwind1.0728
Bayview-Mac Cove Island0.9607
Bayview-Mac Shore0.9664
Harvest Moon Regatta476.91.2582
Custom scoring options for Cyprus
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Denmark
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Spain
Scoring OptionTime On
Distance
Coastal/Long Distance592.0
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Estonia
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Custom scoring options for Finland
Scoring OptionTime On
Distance
Time On
Time
FinRating (Coastal/Long Distance)592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for France
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Custom scoring options for Germany
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8699
Triple Number Coastal/Long Distance Medium1.1047
Triple Number Coastal/Long Distance High1.2317
Triple Number Windward/Leeward Low0.6785
Triple Number Windward/Leeward Medium0.9036
Triple Number Windward/Leeward High1.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Greece
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Hungary
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Custom scoring options for Israel
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Japan
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Korea
Scoring OptionTime On
Distance
Triple Number Coastal/Long Distance Low689.7
Triple Number Coastal/Long Distance Medium543.1
Triple Number Coastal/Long Distance High487.1
Triple Number Windward/Leeward Low884.3
Triple Number Windward/Leeward Medium664.0
Triple Number Windward/Leeward High589.3
Predominantly Upwind590.8
Predominantly Downwind550.8
Predominantly Reaching530.0
Custom scoring options for Lithuania
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Netherlands
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8699
Triple Number Coastal/Long Distance Medium1.1047
Triple Number Coastal/Long Distance High1.2317
Triple Number Windward/Leeward Low0.6785
Triple Number Windward/Leeward Medium0.9036
Triple Number Windward/Leeward High1.0182
Coastal/Long Distance1.0135
Predominantly Upwind1.0155
Predominantly Downwind1.0894
For information
General Purpose Handicap (GPH)610.2
Custom scoring options for Norway
Scoring OptionTime On
Time
Tretall Distanseseilas Lite vind0.8699
Tretall Distanseseilas Mellomvind1.1047
Tretall Distanseseilas Mye vind1.2317
Tretall Pølsebane Lite vind0.6785
Tretall Pølsebane Mellomvind0.9036
Tretall Pølsebane Mye vind1.0182
Distanseseilas ett tall (OSN 8-16kn)1.0135
Distanseseilas ett tall (APH 6-20kn)1.0991
Enkeltall Motvind1.0155
Enkeltall Medvind1.0894
Custom scoring options for Portugal
Scoring OptionTime On
Distance
Time On
Time
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Coastal/Long Distance592.01.0135
Custom scoring options for Russia
Scoring OptionTime On
Distance
Time On
Time
Predominantly Upwind590.81.0155
Predominantly Downwind550.81.0894
Custom scoring options for South Africa
Scoring OptionTime On
Distance
Time On
Time
Cape Doctor Inshore522.71.1479
Cape Doctor Coastal440.21.3632
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Custom scoring options for Slovenia
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8699
Triple Number Coastal/Long Distance Medium1.1047
Triple Number Coastal/Long Distance High1.2317
Triple Number Windward/Leeward Low0.6785
Triple Number Windward/Leeward Medium0.9036
Triple Number Windward/Leeward High1.0182
Custom scoring options for Switzerland
Scoring OptionTime On
Time
Triple Number Coastal/Long Distance Low0.8699
Triple Number Coastal/Long Distance Medium1.1047
Triple Number Coastal/Long Distance High1.2317
Triple Number Windward/Leeward Low0.6785
Triple Number Windward/Leeward Medium0.9036
Triple Number Windward/Leeward High1.0182
Custom scoring options for Sweden
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Predominantly Upwind590.81.0155
Predominantly Downwind550.81.0894
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for Ukraine
Scoring OptionTime On
Distance
Time On
Time
Coastal/Long Distance592.01.0135
Triple Number Coastal/Long Distance Low689.70.8699
Triple Number Coastal/Long Distance Medium543.11.1047
Triple Number Coastal/Long Distance High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Performance Curve6 kt 8 kt 10 kt 12 kt 14 kt 16 kt 20 kt 24 kt
Coastal/Long Distance973.8744.2626.8562.8529.0498.2446.1410.3
Custom scoring options for United States of America
Scoring OptionTODTOT
Triple Number AP Low689.70.8699
Triple Number AP Medium543.21.1046
Triple Number AP High487.11.2317
Triple Number Windward/Leeward Low884.30.6785
Triple Number Windward/Leeward Medium664.00.9036
Triple Number Windward/Leeward High589.31.0182
Single Number Predominant Upwind589.91.0172
Single Number Predominant Reaching522.91.1474
Single Number Predominant Downwind551.41.0881
Predominant Upwind - Low766.40.7829
Predominant Upwind - Low/Med644.60.9309
Predominant Upwind - Medium573.71.0459
Predominant Upwind - Med/High537.31.1167
Predominant Upwind - High516.11.1625
Predominant Downwind Low746.60.8036
Predominant Downwind Low/Med615.60.9747
Predominant Downwind Medium535.01.1215
Predominant Downwind Med/High479.21.2522
Predominant Downwind High427.41.4039
Predominant Reaching Low675.00.8889
Predominant Reaching Low/Med571.91.0492
Predominant Reaching Medium510.91.1745
Predominant Reaching Med/High468.31.2812
Predominant Reaching High431.81.3896
SA/DSPL Upwind25.16SA/DSPL Downwind59.76
Scoring OptionTODTOT
5-Band Windward/Leeward Low935.60.6413
5-Band Windward/Leeward Low/Med760.50.7890
5-Band Windward/Leeward Medium654.00.9175
5-Band Windward/Leeward Med/High597.71.0038
5-Band Windward/Leeward High559.21.0730
Windward/Leeward 60-40 Low944.50.6352
Windward/Leeward 60-40 Low/Med770.80.7784
Windward/Leeward 60-40 Medium666.00.9008
Windward/Leeward 60-40 Med/High613.70.9777
Windward/Leeward 60-40 High581.61.0316
5-Band AP Low725.20.8274
5-Band AP Low/Med607.50.9877
5-Band AP Medium536.31.1188
5-Band AP Med/High494.61.2132
5-Band AP High464.11.2929
5-Band SF Bay Tour - Low890.30.6740
5-Band SF Bay Tour - Low/Med728.00.8242
5-Band SF Bay Tour - Medium629.70.9528
5-Band SF Bay Tour - Med/High577.61.0387
5-Band SF Bay Tour - High541.51.1079
Chicago-Mac Upwind0.9983
Chicago-Mac All Purpose1.0317
Chicago-Mac Downwind1.0728
Bayview-Mac Cove Island0.9607
Bayview-Mac Shore0.9664
Harvest Moon Regatta476.91.2582

Club
Certificate
2024

Boat

DAZZLE

USA 69

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
Data in meters/kilograms (Metric)
HULL AND APPENDAGES (Lightship Trim)
ClassJ 99MeasurementHINPlan reviewHull constructionCoredCarbon RudderNoLight stanchionsNoTrim tabNo
LOA9.950Max. Beam3.410Draft1.983Displacement3,748Wetted area20.92IMS L9.024LSM08.566Acc. length9.950Sink (kg/mm) 15.99
VCGD-0.417VCGM-0.279RM Rated (kg·m) 108.0Limit of positive stability(°) N/AStability IndexN/ADefault crew weight552Declared crew weightN/A
PROPELLER
Propeller TypeFolding 2 blades
InstallationStrutTwin screwNoHydro generatorNo
PRD0.371PBW0.096PIPA0.0036
EDL1.838ST10.065ST20.177
ST30.190ST40.116ST50.295
RIG
Forestay tensionAftInner stayNone FittedMast materialAluminumSingle headsail furlerNoMainsail furlerNoArticulated bowspritNoNon-circular riggingNoFiber riggingNoAdjustable mast footNoRunners/Checkstays0Spreaders2Rotating mastNo
P12.770IG13.119ISP14.434MDT10.112MDL10.208MDT20.110MDL20.149TL1.000MW0.208GO0.239
E4.360J3.842BAS1.493FSDFoilSFJ0.090SPLWPLTPS5.112BD0.161MWT117.00MCG4.815
Flying Headsail Foretriangles IdISPTPS
FLOTATION AND STABILITY
Calculation methodRM entered directlyRM entered108.0Flotation Date29/03/2022
BALLAST
TANKS
INVENTORY
INVENTORY
Fixed Ballast Total0
Total deductible
Total deductible

Club
Certificate
2024

Boat

DAZZLE

USA 69

US SAILING
1 ROGER WILLIAMS UNI WAY
BRISTOL, RI 02809
USA
MAINSAIL
IdMHBMUWMTWMHWMQWAreaMeas.DateCommentMain0.161.091.792.863.6733.9628/03/2023149937
HEADSAIL
IdHHBHUWHTWHHWHQWHLPHLUBtnFlyingFTAreaMeas.DateCommentAP0.090.601.122.143.134.0912.79YesNo 27.0128/03/2023149938
ASYMMETRIC SPINNAKER
IdSLUSLESLSHWSFLRatioAreaMeas.DateCommentA216.3413.9115.139.017.94113%110.8727/03/2023
CRUISER/RACER REQUIREMENTS*
Accommodation length9.9 mTable area0.44 m²Headroom1.70 mMinimum number of berths4Personal gear stowage0.16 m³Fresh water capacity78 lMinimum number of seats in cockpit4Food stowage0.24 m³Fuel capacity48 l
*This list refers to the calculated requirements. See IMS Appendix 1 for the complete list of requirements.